/*
 * Copyright (c) 2012-2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 2003-2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.sun.org.apache.xerces.internal.impl.xs.models;

import com.sun.org.apache.xerces.internal.impl.Constants;
import com.sun.org.apache.xerces.internal.impl.XMLErrorReporter;
import com.sun.org.apache.xerces.internal.impl.dtd.models.CMNode;
import com.sun.org.apache.xerces.internal.impl.xs.XSMessageFormatter;
import com.sun.org.apache.xerces.internal.utils.XMLSecurityManager;
import com.sun.org.apache.xerces.internal.xni.parser.XMLComponentManager;
import com.sun.org.apache.xerces.internal.xni.parser.XMLConfigurationException;

/**
 *
 * @xerces.internal
 *
 * @author  Neeraj Bajaj
 *
 * @version $Id: CMNodeFactory.java,v 1.7 2010-11-01 04:39:58 joehw Exp $
 */
public class CMNodeFactory {

    /** Property identifier: error reporter. */
    private static final String ERROR_REPORTER = Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_REPORTER_PROPERTY;

    /** property identifier: security manager. */
    private static final String SECURITY_MANAGER = Constants.XERCES_PROPERTY_PREFIX + Constants.SECURITY_MANAGER_PROPERTY;

    private static final boolean DEBUG = false;

    //
    private static final int MULTIPLICITY = 1;

    //count of number of nodes created
    private int nodeCount = 0;

    //No. of nodes allowed.
    private int maxNodeLimit;

    /**
     * Error reporter. This property identifier is:
     * http://apache.org/xml/properties/internal/error-reporter
     */
    private XMLErrorReporter fErrorReporter;

    // stores defaults for different security holes (maxOccurLimit in current context) if it has
    // been set on the configuration.
    private XMLSecurityManager fSecurityManager = null;

    /** default constructor */
    public CMNodeFactory() {
    }

    public void reset(XMLComponentManager componentManager) {
        fErrorReporter = (XMLErrorReporter) componentManager.getProperty(ERROR_REPORTER);
        try {
            fSecurityManager = (XMLSecurityManager) componentManager.getProperty(SECURITY_MANAGER);
            //we are setting the limit of number of nodes to 3times the maxOccur value..
            if (fSecurityManager != null) {
                maxNodeLimit = fSecurityManager.getLimit(XMLSecurityManager.Limit.MAX_OCCUR_NODE_LIMIT) * MULTIPLICITY;
            }
        } catch (XMLConfigurationException e) {
            fSecurityManager = null;
        }

    }//reset()

    public CMNode getCMLeafNode(int type, Object leaf, int id, int position) {
        return new XSCMLeaf(type, leaf, id, position);
    }

    public CMNode getCMRepeatingLeafNode(int type, Object leaf, int minOccurs, int maxOccurs, int id, int position) {
        nodeCountCheck();
        return new XSCMRepeatingLeaf(type, leaf, minOccurs, maxOccurs, id, position);
    }

    public CMNode getCMUniOpNode(int type, CMNode childNode) {
        nodeCountCheck();
        return new XSCMUniOp(type, childNode);
    }

    public CMNode getCMBinOpNode(int type, CMNode leftNode, CMNode rightNode) {
        return new XSCMBinOp(type, leftNode, rightNode);
    }

    public void nodeCountCheck() {
        if (fSecurityManager != null && !fSecurityManager.isNoLimit(maxNodeLimit) && nodeCount++ > maxNodeLimit) {
            if (DEBUG) {
                System.out.println("nodeCount = " + nodeCount);
                System.out.println("nodeLimit = " + maxNodeLimit);
            }
            fErrorReporter.reportError(XSMessageFormatter.SCHEMA_DOMAIN, "maxOccurLimit", new Object[] { new Integer(maxNodeLimit) }, XMLErrorReporter.SEVERITY_FATAL_ERROR);
            // similarly to entity manager behaviour, take into accont
            // behaviour if continue-after-fatal-error is set.
            nodeCount = 0;
        }

    }//nodeCountCheck()

    //reset the node count
    public void resetNodeCount() {
        nodeCount = 0;
    }

    /**
    * Sets the value of a property. This method is called by the component
    * manager any time after reset when a property changes value.
    * <p>
    * <strong>Note:</strong> Components should silently ignore properties
    * that do not affect the operation of the component.
    *
    * @param propertyId The property identifier.
    * @param value      The value of the property.
    *
    * @throws SAXNotRecognizedException The component should not throw
    *                                   this exception.
    * @throws SAXNotSupportedException The component should not throw
    *                                  this exception.
    */
    public void setProperty(String propertyId, Object value) throws XMLConfigurationException {

        // Xerces properties
        if (propertyId.startsWith(Constants.XERCES_PROPERTY_PREFIX)) {
            final int suffixLength = propertyId.length() - Constants.XERCES_PROPERTY_PREFIX.length();

            if (suffixLength == Constants.SECURITY_MANAGER_PROPERTY.length() && propertyId.endsWith(Constants.SECURITY_MANAGER_PROPERTY)) {
                fSecurityManager = (XMLSecurityManager) value;
                maxNodeLimit = (fSecurityManager != null) ? fSecurityManager.getLimit(XMLSecurityManager.Limit.MAX_OCCUR_NODE_LIMIT) * MULTIPLICITY : 0;
                return;
            }
            if (suffixLength == Constants.ERROR_REPORTER_PROPERTY.length() && propertyId.endsWith(Constants.ERROR_REPORTER_PROPERTY)) {
                fErrorReporter = (XMLErrorReporter) value;
                return;
            }
        }

    } // setProperty(String,Object)

}//CMNodeFactory()
